The Trump administration pulled the U.S. out of a global minimum business tax agreement earlier this summer when it struck a deal with the Group of Seven (G7) large economies that allowed the U.S. to maintain its corporate minimum tax.

The result was a “side-by-side” system of minimum corporate taxation that preserved the general form of an agreement but let countries cater it to their preferences.

The administration is now working to make minimum taxes more favorable to corporations through the regulatory process after leaving Democrats’ minimum tax largely in place in their One Big Beautiful Bill Act, potentially further eroding the already weakened global tax accord.

Proposed IRS regulations for corporate minimum taxes released in July “appear to be more favorable or simpler than last year’s proposed regulations in many situations,” Monisha Santamaria, a pass-through tax specialist with accountancy KPMG, and others wrote in an analysis earlier this month.

“Affected taxpayers (such as applicable corporations that are partners in partnerships) appear to be celebrating the optionality provided for in the notice,” they said.

Democrats blasted the new regulations in a letter to Treasury Secretary Scott Bessent on Monday. After the unexpected departure of new IRS Commissioner Billy Long, whom the Senate confirmed, Bessent is serving as acting head of the agency.

They accused Trump’s IRS of either postponing or abandoning the corporate alternative minimum taxes (CAMT) that enable the international corporate tax arrangement to remain nominally in place.

“These actions indicate that under........

© The Hill